The UCC25600DRG4 is an integrated circuit (IC) component manufactured by Texas Instruments. It is a highly efficient, synchronous flyback controller suitable for offline power supplies. This IC is specifically designed to support low-cost and high-performance applications, such as power adapters, LED lighting, and auxiliary power supplies.
One of the key features of the UCC25600DRG4 is its advanced primary-side regulation (PSR) technology. This enables the IC to eliminate the need for an optocoupler or secondary-side feedback circuitry, reducing the overall system cost and size. Additionally, it ensures accurate output voltage regulation without relying on the characteristics of the secondary-side components.
Another notable feature of this IC is its high level of integration. It incorporates a wide range of functions, including a high-voltage startup, a flyback controller, a frequency jittering function, and a proprietary active burst mode (ABM). The high-voltage startup allows the IC to operate directly from the rectified mains voltage, eliminating the need for additional components. The flyback controller provides precise control of the output voltage and current. The frequency jittering function helps in reducing electromagnetic interference (EMI) emissions, ensuring compliance with stringent standards.
The UCC25600DRG4 also supports active burst mode (ABM) operation. ABM helps in achieving excellent light-load efficiency by reducing the power consumption during periods of light load
